How to change ReactJS startup script?

Question

React

There is a package.json file which contains a standard application startup script " react-scripts start ".
What is the problem?

1) The fact that when you change the original file structure of the ReactJS application, that is, by deleting the Public folder (all contents are transferred to another folder), the application will not start, but will generate an error. We need either a video explaining how to correctly change the script so that the application starts, or an article, or an explanation of how to solve it.

2) And it would not be bad if more experienced people would advise literature, thanks to which you can improve your knowledge in creating, or what are the useful tools for creating a quality application.
I just don't want to be too much of a burden to my mentor :)

Answer 1

https://create-react-app.dev/
do eject and then you can twist any configs